CN104978300B - Mobile terminal and its detection method being connect with external equipment and device - Google Patents
Mobile terminal and its detection method being connect with external equipment and device Download PDFInfo
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- CN104978300B CN104978300B CN201510419355.9A CN201510419355A CN104978300B CN 104978300 B CN104978300 B CN 104978300B CN 201510419355 A CN201510419355 A CN 201510419355A CN 104978300 B CN104978300 B CN 104978300B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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Abstract
The present invention relates to technical field of mobile terminals, the detection method and device that the present invention provides a kind of mobile terminal and its connect with external equipment, detection method includes the following steps: when the identification pin in the USB interface for detecting mobile terminal is triggered, OTG identification signal is exported to external equipment, and judge whether communicated in the given time with external equipment, it is, then it is identified as OTG equipment access USB interface, and it is communicated with OTG equipment, it is no, then stop exporting OTG identification signal, and external adapter is set to charge mobile terminal when determining external adapter access, by being judged in the given time in the communication failure under micro-short circuit situation between OTG equipment, stop output identification signal to close OTG detection function, to restore the charge function of mobile terminal, avoid mobile terminal USB interface the defect that can not charge when micro-short circuit occurs.
Description
Technical field
The present invention relates to technical field of mobile terminals more particularly to a kind of mobile terminal and its inspections connecting with external equipment
Survey method and apparatus.
Background technique
Current more and more mobile phones have OTG function, and under normal circumstances, mobile phone all passes through the detection of OTG equipment
The identification and usb communication that identify pin are completed, therefore charge function and OTG function can all accurately identify.
But due to the factor of user environment, such as in moist environment or in the environment of easily corrode, USB interface will appear micro-
The phenomenon of short circuit can have the failure that cannot be charged to the mobile phone for supporting OTG at this time.Most current mobile phone is internal battery,
So cannot charge for a user is a problem very serious.In conclusion mobile terminal exists in the prior art
There is the defect for causing mobile terminal that cannot charge when the phenomenon that micro-short circuit in USB interface.
Summary of the invention
The purpose of the present invention is to provide a kind of mobile terminal and its detection method connecting with external equipment and device, purports
Cause mobile terminal that cannot fill when solving and the phenomenon that micro-short circuit occur for the USB interface that mobile terminal exists in the prior art
The defect of electricity.
The invention is realized in this way first aspect provides a kind of detection method that mobile terminal is connect with external equipment,
It is described that detection method includes the following steps:
A. when the identification pin in the USB interface for detecting the mobile terminal is triggered, know to external equipment output OTG
Level signal, and judge whether communicated in the given time with external equipment, it is to then follow the steps B, it is no, it thens follow the steps
C；
B. it is identified as OTG equipment and accesses the USB interface, and communicated with the OTG equipment；
C. stop output OTG identification signal, and fill external adapter to mobile terminal when determining external adapter access
Electricity.
With reference to first aspect, in the possibility implementation of the first of first aspect, institute is detected described in the step A
State the step of identification pin in the USB interface of mobile terminal is triggered specifically:
When detecting that no input low potential is drawn in the identification, determine that the identification pin is triggered.
With reference to first aspect, in second of first aspect of possibility implementation, to outside described in the step A
Equipment issues OTG identification signal and judges the step of whether being communicated in the given time with external equipment specifically:
To external equipment output supply voltage, and judge whether to complete usb communication association with external equipment in the given time
View.
With reference to first aspect, in the third possibility implementation of first aspect, judgement described in the step C is outer
The step of portion's adapter accesses specifically:
When detecting that positive differential signal pins and negative differential signal pin are shorted, external adapter access is determined.
Second aspect of the present invention provides a kind of detection device that mobile terminal is connect with external equipment, the detection device packet
Include detection unit and control unit；
When the identification pin that the detection unit is used to detect in the USB interface of the mobile terminal is triggered, Xiang Suoshu
Control unit output detection signal；
Described control unit be used for external equipment export OTG identification signal, and judge in the given time whether with outside
Portion's equipment is communicated, and when the judgment result is yes, is identified as OTG equipment and is accessed the USB interface, and with the OTG equipment
It is communicated, when the judgment result is no, stops output OTG identification signal, and keep outside suitable when determining external adapter access
Orchestration charges to mobile terminal.
In conjunction with second aspect, detected in the possibility implementation of the first of second aspect, described in the step A single
Member detects the process that the identification pin in the USB interface of the mobile terminal is triggered are as follows:
When detecting the identification pin input low potential, determine that the identification pin is triggered.
In conjunction with second aspect, in second of second aspect of possibility implementation, described control unit is set to outside
Preparation goes out OTG identification signal and judges the process whether communicated in the given time with external equipment are as follows:
To external equipment output supply voltage, and judge whether to complete usb communication association with external equipment in the given time
View.
In conjunction with second aspect, in the third possibility implementation of second aspect, described control unit is also used to examine
External adapter access is determined when measuring positive differential signal pins and negative differential signal pin short circuit.
Third aspect present invention provides a kind of mobile terminal, sets including mobile terminal described in above-mentioned second aspect with outside
The detection device and USB interface of standby connection.
The detection method and device that the present invention provides a kind of mobile terminal and its connect with external equipment, by pre- timing
Interior judgement stops output identification signal in the communication failure under micro-short circuit situation between OTG equipment to close OTG detection function
Can, to restore the charge function of mobile terminal, what the USB interface for avoiding mobile terminal occurred not charging when micro-short circuit is lacked
It falls into.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the process for the detection method that a kind of mobile terminal that an embodiment of the present invention provides is connect with external equipment
Figure；
Fig. 2 is the knot for the detection device that a kind of mobile terminal that another embodiment of the invention provides is connect with external equipment
Structure schematic diagram.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In order to illustrate technical solution of the present invention, the following is a description of specific embodiments.
An embodiment of the present invention provides a kind of detection method that mobile terminal is connect with external equipment, as shown in Figure 1, institute
State that detection method includes the following steps:
Step S101. is defeated to external equipment when the identification pin in the USB interface for detecting the mobile terminal is triggered
OTG identification signal out, and judge whether communicated in the given time with external equipment, it is to then follow the steps S102, it is no,
Then follow the steps S103.
In the step S101, the step of identification pin in the USB interface of the detection mobile terminal is triggered
Specifically:
When detecting that no input low potential is drawn in the identification, determine that the identification pin is triggered.
Described in the step S101 to external equipment issue OTG identification signal and judge in the given time whether with outside
The step of portion's equipment is communicated specifically:
To external equipment output supply voltage, and judge whether to complete usb communication association with external equipment in the given time
View.
Specifically, when the situation of USB interface micro-short circuit occurs, it is micro- due to ID foot earth impedance 1.5M under normal circumstances
For the resistance of short circuit 100 between 10Kohm, the usual range of resistance that circuit is identified as OTG is bigger 0 to 180K, therefore,
System can export 5v power supply and be communicated with OTG equipment at this time.It is set due to mobile terminal as OTG master when being inserted into charger
It is standby, therefore USB communication protocol can not be completed with adapter, the equipment that system judges insertion at this time is non-OTG equipment.
Step S102. is identified as OTG equipment and accesses the USB interface, and is communicated with the OTG equipment.
Step S103. stops output OTG identification signal, and makes external adapter to movement when determining external adapter access
Terminal charge.
In this step, it is enabled specifically, closing the output of OTG equipment 5v power supply, whole system is made to restore charging path.
In this step, specifically, the step of judgement external adapter accesses specifically:
When detecting that positive differential signal pins and negative differential signal pin are shorted, external adapter access is determined.
Further, the information of voltage for the external adapter that the acquisition for mobile terminal is connected with the mobile terminal；It is described
The information of voltage received is compared by mobile terminal with normalization voltage range, if the information of voltage is in the standard electric
It presses in range, then can recognize that the USB adapter is otherwise the USB adapter to match with the hand-held set identifies
The adapter is not the USB adapter to match with the mobile terminal, when the adapter is not and the mobile terminal
When the USB adapter to match, input voltage is converted into charging again after normal voltage.
Another kind embodiment of the invention provides a kind of detection device that mobile terminal is connect with external equipment, the detection dress
It sets including detection unit 201 and control unit 202；
When the identification pin that the detection unit 201 is used to detect in the USB interface of the mobile terminal is triggered, to institute
State the output detection signal of control unit 202；
Described control unit 202 be used for external equipment export OTG identification signal, and judge in the given time whether with
External equipment is communicated, and when the judgment result is yes, is identified as OTG equipment and is accessed the USB interface, and set with the OTG
It is standby to be communicated, when the judgment result is no, stop output OTG identification signal, and make outside when determining external adapter access
Adapter charges to mobile terminal.
Specifically, when the situation of USB interface micro-short circuit occurs, it is micro- due to ID foot earth impedance 1.5M under normal circumstances
For short resistance 100 between 10Kohm, the usual range of resistance that circuit is identified as OTG is bigger 0 to 180K, therefore, this
When system can export 5v power supply and communicated with OTG equipment.When being inserted into charger since mobile terminal is as OTG main equipment,
Therefore USB communication protocol can not be completed with adapter, the equipment that system judges insertion at this time is non-OTG equipment, passes through stopping
Output OTG identification signal realizes the charge function of mobile terminal.
The detection unit 201 detects the process that the identification pin in the USB interface of the mobile terminal is triggered are as follows:
When detecting the identification pin input low potential, determine that the identification pin is triggered.
Described control unit 202 to external equipment issue OTG identification signal and judge in the given time whether with outside
The process that equipment is communicated are as follows:
To external equipment output supply voltage, and judge whether to complete usb communication association with external equipment in the given time
View.
Described control unit 202 is also used to detect that judgement is outer when positive differential signal pins and negative differential signal pin are shorted
The access of portion's adapter.
Further, the control unit in the mobile terminal obtains the electricity for the external adapter being connected with the mobile terminal
Press information；The information of voltage received is compared by the mobile terminal with normalization voltage range, if the information of voltage
In the normalization voltage range, then it can recognize that the USB adapter is that the USB to match with the hand-held set is adapted to
Device, otherwise, identifying the adapter not is the USB adapter to match with the mobile terminal, when the adapter is not
When the USB adapter to match with the mobile terminal, driving voltage changing module by input voltage be converted into after normal voltage again into
Row charging.
Another kind embodiment of the invention provides a kind of mobile terminal, the inspection connecting including above-mentioned mobile terminal with external equipment
Survey device and USB interface.
The detection method and device that the present invention provides a kind of mobile terminal and its connect with external equipment, by pre- timing
Interior judgement stops output identification signal in the communication failure under micro-short circuit situation between OTG equipment to close OTG detection function
Can, to restore the charge function of mobile terminal, what the USB interface for avoiding mobile terminal occurred not charging when micro-short circuit is lacked
It falls into.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Several equivalent substitute or obvious modifications are made under the premise of not departing from present inventive concept, and performance or use is identical, all should
It is considered as belonging to present invention scope of patent protection determined by the appended claims.
Claims (5)
1. the detection method that a kind of mobile terminal is connect with external equipment, which is characterized in that the detection method includes following step
It is rapid:
A. when the identification pin in the USB interface for detecting the mobile terminal is triggered, to external equipment output OTG identification letter
Number, and judge whether communicated in the given time with external equipment, and it is to then follow the steps B, it is no, C is thened follow the steps,
In, the identification pin in the USB interface of the detection mobile terminal is triggered, specifically: detect the identification pin
When inputting low potential, determine that the identification pin is triggered；
B. it is identified as OTG equipment and accesses the USB interface, and communicated with the OTG equipment；
C. stop output OTG identification signal, and so that external adapter is charged mobile terminal when determining external adapter access；
Wherein, the stopping exports OTG identification signal, and makes external adapter to mobile terminal when determining external adapter access
Charging, comprising:
It is enabled to close the output of OTG equipment 5v power supply, whole system is made to restore charging path；
Wherein, the step of access of judgement external adapter described in the step C specifically:
When detecting that positive differential signal pins and negative differential signal pin are shorted, external adapter access is determined, comprising: the shifting
Dynamic terminal obtains the information of voltage for the external adapter being connected with the mobile terminal；By the information of voltage received and standard electric
Pressure range is compared；If the information of voltage is in the normalization voltage range, it is determined that the external adapter be with
The external adapter that the mobile terminal matches, otherwise, it determines the external adapter is not and the mobile terminal phase
Input voltage is converted into after normal voltage again charging to the mobile terminal by the external adapter matched.
2. detection method as described in claim 1, which is characterized in that issue OTG to external equipment described in the step A and know
Level signal simultaneously judges the step of whether being communicated in the given time with external equipment specifically:
To external equipment output supply voltage, and judge whether to complete USB communication protocol with external equipment in the given time.
3. the detection device that a kind of mobile terminal is connect with external equipment, which is characterized in that the detection device includes that detection is single
Member and control unit；
When the identification pin that the detection unit is used to detect in the USB interface of the mobile terminal is triggered, to the control
Unit output detection signal, when specifically for detecting the identification pin input low potential, determines that the identification pin is touched
Hair；
Described control unit is used to export OTG identification signal to external equipment, and judges whether set in the given time with outside
It is standby to be communicated, when the judgment result is yes, it is identified as OTG equipment and accesses the USB interface, and carried out with the OTG equipment
Communication stops output OTG identification signal, and make external adapter when determining external adapter access when the judgment result is no
It charges to mobile terminal；
Wherein, the stopping exports OTG identification signal, and makes external adapter to mobile terminal when determining external adapter access
Charging, comprising:
It is enabled to close the output of OTG equipment 5v power supply, whole system is made to restore charging path；
Wherein, when described control unit is also used to detect that positive differential signal pins and negative differential signal pin are shorted, determine outer
Portion's adapter access, specifically for obtaining the information of voltage for the external adapter being connected with the mobile terminal；By what is received
Information of voltage is compared with normalization voltage range；If the information of voltage is in the normalization voltage range, it is determined that institute
Stating external adapter is the external adapter to match with the mobile terminal, otherwise, it determines the external adapter be not with
Input voltage is converted into after normal voltage again filling the mobile terminal by the external adapter that the mobile terminal matches
Electricity.
4. detection device as claimed in claim 3, which is characterized in that described control unit issues OTG identification to external equipment
Signal simultaneously judges the process whether communicated in the given time with external equipment are as follows:
To external equipment output supply voltage, and judge whether to complete USB communication protocol with external equipment in the given time.
5. a kind of mobile terminal, which is characterized in that including mobile terminal described in 3 to 4 any one of the claims and outside
The detection device and USB interface of portion's equipment connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510419355.9A CN104978300B (en) | 2015-07-16 | 2015-07-16 | Mobile terminal and its detection method being connect with external equipment and device |
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| CN201510419355.9A CN104978300B (en) | 2015-07-16 | 2015-07-16 | Mobile terminal and its detection method being connect with external equipment and device |
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| CN104978300B true CN104978300B (en) | 2019-04-12 |
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| CN105573946B (en) * | 2016-03-01 | 2019-03-01 | Oppo广东移动通信有限公司 | The method and device of Universal Serial Bus Interface multiplexing |
| SG11201807462VA (en) * | 2016-03-09 | 2018-09-27 | Razer Asia Pacific Pte Ltd | Computing devices, power supply devices, methods for controlling a computing device, and methods for controlling a power supply device |
| CN106412245B (en) * | 2016-09-06 | 2021-02-26 | 青岛海信移动通信技术股份有限公司 | USB interface waterproof method and mobile terminal |
| CN106532383A (en) * | 2016-10-31 | 2017-03-22 | 深圳市金立通信设备有限公司 | Compatible design method and circuit |
| CN106597143B (en) * | 2016-11-10 | 2022-01-14 | 青岛海信移动通信技术股份有限公司 | Test equipment and test method |
| CN106786876B (en) * | 2016-12-20 | 2019-08-02 | 宇龙计算机通信科技(深圳)有限公司 | A kind of terminal fast charge protection circuit, terminal and terminal fast charge protect system |
| CN106786960B (en) * | 2017-01-13 | 2019-10-25 | Oppo广东移动通信有限公司 | Charge control method, device and terminal |
| CN106844265B (en) * | 2017-02-06 | 2018-10-19 | 维沃移动通信有限公司 | A kind of control method and mobile terminal of general-purpose serial bus USB interface |
| CN108874708B (en) * | 2018-06-28 | 2021-08-10 | 努比亚技术有限公司 | OTG device, terminal charging method, mobile terminal and computer readable storage medium |
| CN115017073B (en) * | 2021-03-05 | 2023-08-29 | 龙芯中科技术股份有限公司 | Enabling method and device of communication controller, electronic equipment and storage medium |
| CN113672438B (en) * | 2021-08-23 | 2023-05-12 | 紫光展讯通信(惠州)有限公司 | Method, device, communication system and storage medium for maintaining USB connection |
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